Madonna has named Katy Perry as the guest curator for her Art for Freedom project.

The pair will work together to select an artist who can creatively express their take on freedom, who will then win a $10,000 grant to a nonprofit organization of their choice.

Submissions can include videos, music, poetry and photographs by artists "whose creative expression demonstrates a unique view of the fight for human rights", according to Billboard.

"I am so fortunate to have the freedom to express myself through music," Perry said in a statement. "Now I'm calling all of my incredibly creative KatyCats to use their talent to show Madonna and me how they express their freedom.